Effect of Alloying Elements and Processing Parameters on Mechanical Properties of Austempered Ductile Iron

Authors

  • Jyoti Prakash Dhal National Institute of Technology, Rourkela-769008, Odisha, India
  • Amar Kumar Das National Institute of Technology, Rourkela, Odisha, India
  • Ranjit Kumar Panda National Institute of Technology, Rourkela, Odisha, India
  • S. C. Mishra National Institute of Technology, Rourkela, Odisha, India
  • S. Sen National Institute of Technology, Rourkela, Odisha, India

Keywords:

austempering, austempered ductile iron (ADI), ausferrite, tensile strength, hardness, elongation

Abstract

In the present work, austempering is carried out for three different grades (Unalloyed, copper alloyed and Nickel alloyed) of ductile iron. After that the variation of mechanical properties (Hardness, Tensile strength and Elongation) and microstructure of the austempered ductile iron (ADI) with alloying elements (Copper and Nickel) and austempering process variables (austempering temperature and austempering time) were studied. It is found that, with increasing austempering time hardness, tensile strength and elongation are increasing but with increasing austempering temperature hardness and tensile strength are decreasing and elongation increasing. Austempered ductile iron with alloying element (Cu or Ni) is showing some improved mechanical properties such that: higher strength, hardness and lower elongation, than the unalloyed austempered ductile iron. In Microstructure, higher ferrite fraction is observed for higher austempering time and higher austenite fraction is observed for higher austempering temperature, for all the three grades of austempered ductile iron.

 

Author Biographies

  • Jyoti Prakash Dhal, National Institute of Technology, Rourkela-769008, Odisha, India
    Department of Chemistry
  • Amar Kumar Das, National Institute of Technology, Rourkela, Odisha, India
    Department of Metallurgical & Materials Engineering
  • Ranjit Kumar Panda, National Institute of Technology, Rourkela, Odisha, India
    Department of Physics
  • S. C. Mishra, National Institute of Technology, Rourkela, Odisha, India
    Department of Metallurgical & Materials Engineering
  • S. Sen, National Institute of Technology, Rourkela, Odisha, India
    Department of Metallurgical & Materials Engineering

Downloads

Published

2019-04-16

Issue

Vol. 3 No. 1 (2013)

Section

Articles

License

Declaration and Copyright Transfer Form

(to be completed by authors)

I/ We, the undersigned author(s) of the submitted manuscript, hereby declare, that the above manuscript which is submitted for publication in the STM Journals(s), is not published already in part or whole (except in the form of abstract) in any journal or magazine for private or public circulation, and, is not under consideration of publication elsewhere.

  • I/We will not withdraw the manuscript after 1 week of submission as I have read the Author Guidelines and will adhere to the guidelines.
  • I/We Author(s ) have niether given nor will give this manuscript elsewhere for publishing after submitting in STM Journal(s).
  • I/ We have read the original version of the manuscript and am/ are responsible for the thought contents embodied in it. The work dealt in the manuscript is my/ our own, and my/ our individual contribution to this work is significant enough to qualify for authorship.
  •  I/We also agree to the authorship of the article in the following order:

Author’s name                                    

 

1. ________________

2. ________________

3. ________________

4. ________________

 

We  Author(s) tick this box and would request you to consider it as our signature as we agree to the terms of this Copyright Notice, which will apply to this submission if and when it is published by this journal.